Humidifier



FIG. 1 is a top, rear perspective view showing a first embodiment of our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a top, rear perspective view showing a second embodiment of our new design;

FIG. 9 is a right side elevational view thereof;

FIG. 10 is a rear elevational view thereof; and,

FIG. 11 is a front elevational view thereof.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a humidifier, as shown and described. 